Dynamic downhole recorder

Details Dynamic downhole recorder Dynamic downhole recorder

1983-12-14

1987-04-28

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

73151, 346 33WL, 364422, 367 60, 367 69, G01V 100, G01D 900

Patent

active

046619321

ABSTRACT:
A method and apparatus allows dynamic data to be recorded in a drill string for later playback at the surface. The system includes a transducer located in a sub in the drill string which provides electrical responses to a analog to digital converter. A timer circuit provides timer pulses to the converter to cause the response to be converted into a digital value for storing in a recorder. The timer pulses are also used to address the memory location. The timer circuit has the ability to provide a variable number of timer pulses at a variable frequency and at variable intervals. A surface timer circuit provides simultaneous timer pulses to a counter to indicate at the surface which memory location is being filled at any given time.

REFERENCES:
patent: 3315224 (1967-04-01), Ferguson
patent: 3333247 (1967-07-01), Hadley et al.
patent: 3340499 (1967-09-01), Hadley
patent: 4216536 (1980-08-01), More
patent: 4303997 (1981-12-01), Tanguy
patent: 4350979 (1982-09-01), Eberweih
patent: 4468665 (1984-08-01), Thawley et al.
patent: 4506263 (1985-04-01), Sidhwa
patent: 4570234 (1986-02-01), Baach
Prothero, Jr., William A., A Digital Event-Recording Ocean Bottom Seismometer Capsule, Marine Geophysical Research (1977), pp. 119-141.
Lynes RES.TM. -300 System.

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